<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <title>样式操作</title>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <style type="text/css">
    .one{
      width: 200px;
      height: 140px;
      margin: 20px;
      background: red;
      border: #000 1px solid;
      float:left;
      font-size: 17px;
      font-family:Roman;
    }

    div,span{
      width: 140px;
      height: 140px;
      margin: 20px;
      background: #9999CC;
      border: #000 1px solid;
      float:left;
      font-size: 17px;
      font-family:Roman;
    }

    div .mini{
      width: 40px;
      height: 40px;
      background: #CC66FF;
      border: #000 1px solid;
      font-size: 12px;
      font-family:Roman;
    }
    div .mini01{
      width: 40px;
      height: 40px;
      background: #CC66FF;
      border: #000 1px solid;
      font-size: 12px;
      font-family:Roman;
    }

    /*待用的样式*/
    .second{
      width: 300px;
      height: 340px;
      margin: 20px;
      background: yellow;
      border: pink 3px dotted;
      float:left;
      font-size: 22px;
      font-family:Roman;
    }


  </style>
  <script src="./js/jquery-3.7.1.min.js"></script>
  <script type="text/javascript">
    // 加载机制！1！！！！！
    $(function () {
      //<input type="button" value="采用属性增加样式(改变id=one的样式)"  id="b1"/>
      // $("#b1").click(function () {
      //   // alert("触发了")
      //   $("#one").attr("class","second")
      // })
      //<input type="button" value=" addClass"  id="b2"/>
      $("#b2").click(function () {
        $("#one").attr("class","second")
      })

      //<input type="button" value="removeClass"  id="b3"/>
      $("#b3").click(function () {
        $("#one").removeAttr("class")
      })
      //<input type="button" value=" 切换样式"  id="b4"/>
      $("#b4").click(function () {
        $("#one").toggleClass("second")
      })
      //<input type="button" value=" 通过css()获得id为one背景颜色"  id="b5"/>
      $("#b5").click(function () {
        alert($("#one").css("backgroundColor"))
      })
      //<input type="button" value=" 通过css()设置id为one背景颜色为绿色"  id="b6"/>
      $("#b6").click(function () {
        $("#one").css("backgroundColor","green")
      })
    })



  </script>

</head>

<body>

<input type="button" value="保存"  class="mini" name="ok"  class="mini" />
<input type="button" value="采用属性增加样式(改变id=one的样式)"  id="b1"/>
<input type="button" value=" addClass"  id="b2"/>
<input type="button" value="removeClass"  id="b3"/>
<input type="button" value=" 切换样式"  id="b4"/>
<input type="button" value=" 通过css()获得id为one背景颜色"  id="b5"/>
<input type="button" value=" 通过css()设置id为one背景颜色为绿色"  id="b6"/>

<h1>有一种奇迹叫坚持</h1>
<h2>自信源于努力</h2>

<div id="one" >
  id为one
</div>

<div id="two" class="mini" >
  id为two   class是 mini
  <div  class="mini" >class是 mini</div>
</div>

<div class="one" >
  class是 one
  <div  class="mini" >class是 mini</div>
  <div  class="mini" >class是 mini</div>
</div>

<div class="one" >
  class是 one
  <div  class="mini01" >class是 mini01</div>
  <div  class="mini" >class是 mini</div>
</div>



<span class="spanone">    span
		</span>

</body>


</html>



